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From "Hadoop QA (Jira)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-14847) Blocks are over-replicated while EC decommissioning
Date Fri, 13 Sep 2019 11:40:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-14847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16929136#comment-16929136
] 

Hadoop QA commented on HDFS-14847:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 21s{color} | {color:blue}
Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  0s{color} |
{color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m  0s{color}
| {color:green} The patch appears to include 1 new or modified test files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 18m 30s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 57s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 42s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  3s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 13m  0s{color}
| {color:green} branch has no errors when building and testing our client artifacts. {color}
|
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m  1s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 50s{color} |
{color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 57s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 52s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 52s{color} | {color:green}
the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  0m 38s{color}
| {color:orange} hadoop-hdfs-project/hadoop-hdfs: The patch generated 3 new + 41 unchanged
- 0 fixed = 44 total (was 41) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 57s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m  0s{color}
| {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 12m 19s{color}
| {color:green} patch has no errors when building and testing our client artifacts. {color}
|
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m  5s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 47s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 81m 42s{color} | {color:red}
hadoop-hdfs in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 30s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}138m  6s{color} | {color:black}
{color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hdfs.TestClientProtocolForPipelineRecovery |
|   | hadoop.hdfs.TestMultipleNNPortQOP |
|   | hadoop.hdfs.TestCrcCorruption |
|   | hadoop.hdfs.tools.TestDFSZKFailoverController |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.1 Server=19.03.1 Image:yetus/hadoop:f4f9f0fe4f2 |
| JIRA Issue | HDFS-14847 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12980248/HDFS-14847.001.patch
|
| Optional Tests |  dupname  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit
 shadedclient  findbugs  checkstyle  |
| uname | Linux f447373ab3eb 4.15.0-54-generic #58-Ubuntu SMP Mon Jun 24 10:55:24 UTC 2019
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 4852a90 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_222 |
| findbugs | v3.1.0-RC1 |
| checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/27863/artifact/out/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt
|
| unit | https://builds.apache.org/job/PreCommit-HDFS-Build/27863/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/27863/testReport/ |
| Max. process+thread count | 3354 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project/hadoop-hdfs |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/27863/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> Blocks are over-replicated while EC decommissioning
> ---------------------------------------------------
>
>                 Key: HDFS-14847
>                 URL: https://issues.apache.org/jira/browse/HDFS-14847
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs
>    Affects Versions: 3.2.0, 3.0.3, 3.1.2, 3.3.0
>            Reporter: Fei Hui
>            Assignee: Fei Hui
>            Priority: Critical
>         Attachments: HDFS-14847.001.patch
>
>
> Found that Some blocks are over-replicated while ec decommissioning. Messages in log
as follow
> {quote}
> INFO BlockStateChange: Block: blk_-9223372035714984112_363779142, Expected Replicas:
9, live replicas: 8, corrupt replicas: 0, decommissioned replicas: 0, decommissioning replicas:
3, maintenance replicas: 0, live entering maintenance replicas: 0, excess replicas: 0, Is
Open File: false, Datanodes having this block: 10.254.41.34:50010 10.254.54.53:50010 10.254.28.53:50010
10.254.56.55:50010 10.254.32.21:50010 10.254.33.19:50010 10.254.63.17:50010 10.254.31.19:50010
10.254.35.29:50010 10.254.51.57:50010 10.254.40.58:50010 10.254.69.31:50010 10.254.47.18:50010
10.254.51.18:50010 10.254.43.57:50010 10.254.50.47:50010 10.254.42.37:50010 10.254.57.29:50010
10.254.67.40:50010 10.254.44.16:50010 10.254.59.38:50010 10.254.53.56:50010 10.254.45.11:50010
10.254.39.22:50010 10.254.30.16:50010 10.254.35.53:50010 10.254.22.30:50010 10.254.26.34:50010
10.254.17.58:50010 10.254.65.53:50010 10.254.60.39:50010 10.254.61.20:50010 10.254.64.23:50010
10.254.21.13:50010 10.254.37.35:50010 10.254.68.30:50010 10.254.62.37:50010 10.254.25.58:50010
10.254.52.54:50010 10.254.58.31:50010 10.254.49.11:50010 10.254.55.52:50010 10.254.19.19:50010
10.254.36.40:50010 10.254.18.30:50010 10.254.20.39:50010 10.254.66.52:50010 10.254.56.32:50010
10.254.24.55:50010 10.254.34.11:50010 10.254.29.58:50010 10.254.27.40:50010 10.254.46.33:50010
10.254.23.19:50010 10.254.74.12:50010 10.254.74.13:50010 10.254.41.35:50010 10.254.67.58:50010
10.254.54.11:50010 10.254.68.14:50010 10.254.27.14:50010 10.254.51.29:50010 10.254.45.21:50010
10.254.50.56:50010 10.254.47.31:50010 10.254.40.14:50010 10.254.65.21:50010 10.254.62.22:50010
10.254.57.16:50010 10.254.36.52:50010 10.254.30.13:50010 10.254.35.12:50010 10.254.69.34:50010
10.254.34.58:50010 10.254.17.50:50010 10.254.63.12:50010 10.254.28.21:50010 10.254.58.30:50010
10.254.24.57:50010 10.254.33.50:50010 10.254.44.52:50010 10.254.32.48:50010 10.254.43.39:50010
10.254.20.37:50010 10.254.56.59:50010 10.254.22.33:50010 10.254.60.34:50010 10.254.49.19:50010
10.254.52.21:50010 10.254.23.59:50010 10.254.21.16:50010 10.254.42.55:50010 10.254.29.33:50010
10.254.53.17:50010 10.254.19.14:50010 10.254.64.51:50010 10.254.46.20:50010 10.254.66.22:50010
10.254.18.38:50010 10.254.39.17:50010 10.254.37.57:50010 10.254.31.54:50010 10.254.55.33:50010
10.254.25.17:50010 10.254.61.33:50010 10.254.26.40:50010 10.254.59.23:50010 10.254.59.35:50010
10.254.66.48:50010 10.254.41.15:50010 10.254.54.31:50010 10.254.61.50:50010 10.254.62.31:50010
10.254.17.56:50010 10.254.29.18:50010 10.254.45.16:50010 10.254.63.48:50010 10.254.22.34:50010
10.254.37.51:50010 10.254.65.49:50010 10.254.58.21:50010 10.254.42.12:50010 10.254.55.17:50010
10.254.27.13:50010 10.254.57.17:50010 10.254.67.18:50010 10.254.31.31:50010 10.254.28.12:50010
10.254.36.12:50010 10.254.21.59:50010 10.254.30.30:50010 10.254.26.50:50010 10.254.40.40:50010
10.254.32.17:50010 10.254.47.55:50010 10.254.60.55:50010 10.254.49.33:50010 10.254.68.47:50010
10.254.39.21:50010 10.254.56.14:50010 10.254.33.54:50010 10.254.69.57:50010 10.254.43.50:50010
10.254.50.13:50010 10.254.25.49:50010 10.254.18.20:50010 10.254.52.23:50010 10.254.19.11:50010
10.254.20.21:50010 10.254.74.16:50010 10.254.64.55:50010 10.254.24.48:50010 10.254.46.29:50010
10.254.51.12:50010 10.254.23.56:50010 10.254.44.59:50010 10.254.53.58:50010 10.254.34.38:50010
10.254.35.37:50010 10.254.35.16:50010 10.254.36.23:50010 10.254.41.47:50010 10.254.54.12:50010
10.254.20.59:50010 , Current Datanode: 10.254.56.55:50010, Is current datanode decommissioning:
true, Is current datanode entering maintenance: false
> {quote}
> Decommisions hang for a long time.
> Deep into the code and find that There is a problem in ErasureCodingWork.java
> For Example, there are 2 nodes(dn0, dn1) in decommission and an ec block group with the
2 nodes. After creating an ErasureCodingWork to reconstruct, it will create 2 replication
work. 
> If dn0 replicates in success and dn1 replicates in failure, Then it will always create
replication work for dn0. The block on dn0 is over-replicated and The block on dn1 will never
replicate
> Here is the initial path for this.



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